Hbond2002 Distribution

Downloading the software

• Description: A software package that allows the user to incorporate a direction-dependent hydrogen bond restraint in macromolecular crystallographic refinement. Implemented as a module to the refinement program CNS. This software is described in detail in Fabiola et al., "An Improved hydrogen bond potential: Impact on medium-resolution protein structures", Protein Science, vol. 11, pp. 1415-23, 2002.
• License agreement: A Portable Document Format (pdf) copy of a license agreement that may be printed locally and returned to initiate distribution, or digitally signed and returned by e-mail. Hbond2002 is distributed at no cost over the internet to not-for-profit academic institutions. A license agreement can be downloaded, signed and returned for a password to download the programs. Licenses with commercial entities are agreed on a case-by-case basis. Pending execution of a permanent license agreement, users at for-profit institutions can request temporary permission to evaluate the program by sending e-mail to the authors.
• Distribution: For WWW distribution, licensed users will be provided with a password so that they can copy a compressed tar file. Before clicking on hbond2002.tar.gz be sure to set the Options of your WWW browser to Load to local disk and save the file in the parent directory where hbond2002 is to be installed. The package can then be installed with the commands gunzip hbond2002.tar.gz; tar xvpf hbond2002.tar. Further details are given in the README file.